Zebra ZD421d Direct Thermal Label Printer 203 dpi, USB/USB Host/Ethernet, BLE

Fast 4-Inch Labeling with Reliable Direct Thermal Performance

Deploy the Zebra ZD421d (MPN ZD4A042-D0EE00EZ) for crisp, hassle-free 4-inch labels without ribbons. With 203 dpi resolution, up to 6 ips print speed, and a 104 mm max print width, it delivers the throughput and clarity operations demand. USB, USB Host, and Ethernet connectivity fit standard IT environments, while BLE 5.0 ensures quick mobile setup and management.

Key Benefits & Features

• Direct thermal engine: Prints sharp labels without ribbons, reducing consumables and maintenance.
• 203 dpi at up to 6 ips: Consistent, readable text and barcodes at speeds up to 152 mm/s.
• Versatile media handling: Supports roll-fed or fan-fold media, die-cut or continuous labels, tags, receipts, and wristbands.
• Enterprise connectivity: USB 2.0, USB Host for peripherals, 10/100 Ethernet, plus BLE 5.0 for mobile setup.
• Manage at scale: Link-OS and Print DNA tools with Print Touch (NFC) and a real-time clock simplify deployment and control.

Ideal Use Cases

• Retail and warehouse shelf, price, and shipping labels
• Healthcare wristbands and labeling at point of care
• Light manufacturing work-in-process and parts labeling
• Office and asset identification, files, and records

Technical Specifications

• Print Technology: Direct Thermal
• Resolution: 203 dpi (8 dots/mm)
• Max Print Speed: 152 mm/s (6 ips)
• Max Print Width: 104 mm (4.09 in.)
• Memory: 512 MB Flash, 256 MB SDRAM
• Interfaces: USB 2.0, USB Host, 10/100 Ethernet, Bluetooth Low Energy (BLE) 5.0
• Media Types: Roll-fed or fan-fold; die-cut or continuous labels, tags, receipts; wristbands
• Max Label Length: 991 mm (39 in.); Max Roll OD: 127 mm
• Media Thickness: 0.08–0.19 mm; gap/black-mark sensing with transmissive/reflective sensors
• Dimensions/Weight (DT model): 220.8 × 177.5 × 150.7 mm; 1.35 kg
• Operating Range: 4.4–41 °C; 10–90% RH (non-condensing)

Get Reliable, Ribbon-Free Printing Now

Streamline your labeling with fast, accurate, and low-maintenance direct thermal output—built on Zebra’s proven ZD421 platform. Order today.

Model	Zebra ZD421
Part Number	ZD4A042-D0EE00EZ
Product Type	Direct Thermal Desktop Printer
Print Resolution	203 dpi (8 dots/mm)
Maximum Print Speed	152 mm/sec (6 ips)
Maximum Print Width	104 mm (4.09 in)
Memory	512 MB Flash, 256 MB SDRAM
Interfaces	USB 2.0, USB Host, Ethernet, Bluetooth Low Energy (BLE) 5.0
Media Types	Roll-fed or fan-fold, die-cut or continuous labels, tags, receipt paper, wristbands
Dimensions (L × W × H)	220.8 × 177.5 × 150.7 mm
Weight	1.35 kg (2.98 lbs)
Operating Temperature	4.4 °C to 41 °C
Storage Temperature	-40 °C to 60 °C
Operating Humidity	10% to 90% (non-condensing)
Storage Humidity	5% to 95% (non-condensing)

Print Technology	Direct Thermal
Supported Programming Languages	ZPL II, EPL2, ZBI, XML
Maximum Label Length	991 mm (39 in)
Maximum Roll Diameter	127 mm (5.0 in)
Media Width	15 – 108 mm (0.585 – 4.25 in)
Media Thickness	0.08 – 0.19 mm
Media Sensing	Gap, black line, notch
Fonts	16 resident expandable ZPL bitmap fonts, 2 resident scalable ZPL fonts; Unicode compliant
Barcode Symbologies	Linear: Code 11, Code 39, Code 93, Code 128, EAN, UPC, etc.; 2D: PDF417, QR Code, Data Matrix, Aztec
Operating Systems Supported	Android, iOS, Windows
Power Supply	Auto-ranging 100–240 VAC, 50–60 Hz
Certifications	ENERGY STAR®, CE, FCC Class B, cTUVus, IEC 60950-1, RoHS

Included in the Box	power cords, documentation
Optional – Modules	Ethernet Module (P1112640-015), RS-232 Serial Interface, Wi-Fi 802.11ac & Bluetooth 4.1
Optional – Media Handling	Field-installable cutter (max thickness 0.19 mm), Dispenser/Peeler with label-taken sensor
Optional – Accessories	Zebra Printhead Cleaning Pens (PN 105950-035); Media core adapters (1.5 in., 2 in., 3 in.); ZD-Series Battery (2750 mAh); Carrying Case; ZKDU™ Keyboard Display Unit

INTERNATIONAL -

International buyers must acknowledge that all duties and taxes are their sole responsibility and Network Devices Inc is not held responsible for possible additional charges.

DOMESTIC -

Products are shipped Monday through Friday via UPS/FedEx/USPS. The estimated delivery time is 1-6 business days depending on location. If “Free Shipping” is offered, it will be by Ground only and within USA Continental States Only (48 States). There will be a surcharge on shipments to Hawaii, Alaska, Puerto Rico and APO/FPO addresses. After you have made a purchase, the surcharge will be calculated using the parcel’s weight and size. Network Devices Inc ships the product the same day of receiving an order. Otherwise you will a receive notification of delay or cancellation of said order.